Participant in the Royal Road Writathon challenge! Jack thought he’d finally escaped the life of monster-filled dungeons and high-stakes magic. After spending his youth in the Otherworld - a realm of myth, danger, and boundless magic - he clawed his way home to Earth. But what he returns to is far from the world he left behind. Earth has changed, and so has he. Now, dungeons are invading his world, tearing through reality itself. Over his first quiet cup of coffee and a slice of his favorite pie, Jack realizes that his fight isn’t over. Earth is in the crosshairs of the very forces he thought he’d left behind, and only his hard-won skills as a legendary Dungeon Master can keep the encroaching apocalypse at bay. Armed with his custom-built deck of cards and a pair of enchanted dice, Jack has to navigate Earth’s new reality - a game of survival where ancient powers and modern threats collide. From scratch, he’ll forge alliances and reclaim his strength. After all, he’s a veteran adventurer, an Ex Dungeon Master. And no one knows the art of dungeon-crawling like Jack does. What to Expect:A fast-paced, GameLitRPG adventure where dungeon incursions turn Earth into a battlefield of monsters, loot, and perilous quests. With RPG mechanics, strategic deckbuilding, and a gritty yet humorous tone, Jack brings his otherworldly expertise to Earth’s defense - with every skill earned, dice roll counted, and ally forged under fire. This Story Is About:Jack - a seasoned Dungeon Master torn from one world and thrust back into another, forced to defend a home he barely recognizes. His goal? Master the dungeon apocalypse and reclaim the world he sacrificed everything to return to. Additional Info:For fans of reverse isekai, RPG mechanics, and an anti-hero who’s seen it all, Dungeon Ex Master offers relentless action, tactical deckbuilding, and a protagonist with a dry wit and deeper resolve than he’s willing to admit. Prepare for a dungeon apocalypse like no other.